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In a letter to immigration services from an Atlanta area hospital, they state that De Palma's sister is the only fully matched donor available.

In the denial letter, the U.S. Embassy in Mexico states that the relative did not demonstrate they have ties to Mexico that will compel them to return to their home country after the visit. The De Palma family says the sister has children who live in Mexico and owns two homes which constitutes as ties, according to the U.S. Embassy.

The De Palmas say it's frustrating because their aunt has taken the proper legal steps in order to enter the country for a good purpose. They're desperate because time is running out.

The family has hired an attorney to help them and De Palma's sister plans on applying for a visa again.